Engineering research and development of magnetically levitated high-temperature superconducting coil system for mini-RT project

• Published in: IEEE transactions on applied superconductivity Vol. 12; no. 1; pp. 948 - 951
• Main Authors: Yanagi, N., Morikawa, J., Mito, T., Ogawa, Y., Hamaguchi, S., Chikaraishi, H., Iwakuma, M., Uede, T., Itoh, I., Nose, S., Fukui, S.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.03.2002; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; COILING; COOLING; Displacement control; Electrical engineering. Electrical power engineering; Electromagnets; ENGINES; Exact sciences and technology; Gages; Gauges; High temperature superconductors; LASERS; Magnetic confinement; Magnetic levitation; Plasma confinement; Plasma temperature; Research and development; Silver; Superconducting coils; Superconducting magnets; Superconducting tapes; SUPERCONDUCTIVITY; SUPERCONDUCTORS; Switches; TAPE; Various equipment and components
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2002.1018556

A magnetically levitated superconducting coil system is being developed using high temperature superconductors for examining a new magnetic confinement of high-beta plasmas. A miniature double-pancake coil was fabricated with a Bi-2223 Ag-sheathed tape for the purpose of developing a floating control using laser displacement gauges. The coil was inductively excited with liquid nitrogen cooling and successfully levitated in the air. A persistent current switch is also being developed with a Bi-2223 Ag-0.3wt%Mn-sheathed tape, and a prototype model was successfully tested.